The magnetic flux linked with the coil (in Weber) is given by theequat

1.	The magnetic flux linked with the coil (in Weber) is given by theequation – Փ = 5t2 + 3t + 16 The induced EMF in the coil at time, t = 4 will be-(i) -27 V (ii) -43 V (iii) -108 V (iv) 210 V
Answer» Answer is (ii) -43 V Փ = 5t²+ 3t + 16 \(\|e\|=\frac{d\phi}{dt}\) = \(\frac{d}{dt}\)[5t²+ 3t + 16] = 10t + 3 \|e\|_t=4 = 10(4)+3 = 43V e = -43Volts

The magnetic flux linked with the coil (in Weber) is given by theequation – Փ = 5t2 + 3t + 16 The induced EMF in the coil at time, t = 4 will be-(i) -27 V (ii) -43 V (iii) -108 V (iv) 210 V

Answer»

Answer is (ii) -43 V

Փ = 5t²+ 3t + 16

\(|e|=\frac{d\phi}{dt}\)

= \(\frac{d}{dt}\)[5t²+ 3t + 16]

= 10t + 3

|e|_t=4 = 10(4)+3 = 43V

e = -43Volts

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The magnetic flux linked with the coil (in Weber) is given by theequation – Փ = 5t2 + 3t + 16 The induced EMF in the coil at time, t = 4 will be-(i) -27 V (ii) -43 V (iii) -108 V (iv) 210 V

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